Golang : Simple image viewer with Go-GTK
This is a really simple command line image viewer program written in Golang. Instead of viewing images with Photoshop or web browser, I need this cross-platform command line image viewer to view the images generated by my image processor program.
To get it running.
First, install the gtk
library.
Windows :
Download at http://www.gtk.org/download/windows.php
Linux: (you can use higher version instead of 2.0)
apt-get install libgtk2.0-dev libglib2.0-dev libgtksourceview2.0-dev
or
yum install libgtk2.0-dev libglib2.0-dev libgtksourceview2.0-dev
MacOSX:
Get the latest Homebrew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
then
brew install gtk
Next :
go get github.com/mattn/go-gtk/gdkpixbuf
go get github.com/mattn/go-gtk/glib
go get github.com/mattn/go-gtk/gtk
Once the gtk
library is installed. Build this code below and execute ./imageviewer <your image file>
- such as ./imageviewer helloworld.png
Here you go!
imageviewer.go
package main
import (
"fmt"
"github.com/mattn/go-gtk/glib"
"github.com/mattn/go-gtk/gtk"
"os"
)
func ErrorCheck(err error) {
if err != nil {
panic(err)
}
}
func main() {
if len(os.Args) != 2 {
fmt.Printf("Usage : %s <image file>\n", os.Args[0])
os.Exit(0)
}
imageFile := os.Args[1]
gtk.Init(nil)
window := gtk.NewWindow(gtk.WINDOW_TOPLEVEL)
window.SetPosition(gtk.WIN_POS_CENTER)
window.SetTitle("Golang GTK Really Primitive Image Viewer")
window.SetIconName("gtk-dialog-info")
window.Connect("destroy", func(ctx *glib.CallbackContext) {
gtk.MainQuit()
}, "Happy coding!")
hbox := gtk.NewHBox(false, 1)
hpaned := gtk.NewHPaned()
hbox.Add(hpaned)
frame1 := gtk.NewFrame(imageFile)
framebox1 := gtk.NewHBox(false, 1)
frame1.Add(framebox1)
hpaned.Pack1(frame1, false, false)
image := gtk.NewImageFromFile(imageFile)
framebox1.Add(image)
window.Add(hbox)
imagePixBuffer := image.GetPixbuf()
horizontalSize := imagePixBuffer.GetWidth()
verticalSize := imagePixBuffer.GetHeight()
window.SetSizeRequest(horizontalSize, verticalSize)
window.ShowAll()
gtk.Main()
}
Sample output:
Reference:
By Adam Ng
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